baber/WOPTO huggingface dataset:
Patent GB-795455-A (GB)
Title: Steroid compounds
IPC: C07J75/00
Filed: 1955-06-08
Abstract: The invention comprises compounds of the general formula: <FORM:0795455/IV (b)/1> wherein X represents a halogen and R represents an acyloxy group, and the preparation thereof by reacting a 3,11,20-triketo-16,17-oxido - 21 - acyloxy - D 4 - pregnene or a 3-ethylenedioxy - 11,20 - diketo - 16,17 - oxido-21 - acyloxy - D 5 - pregnene with a hydrogen halide, e.g. hydrogen bromide, chloride or iodide, or by reacting a 3-ethylenedioxy-11,20-diketo-16,17 - oxido - 21 - acyloxy - D 5 - pregnene with an acid other than a hydrohalic acid to form a 3,11,20 - triketo - 16,17 - oxido - 21 - acyloxy - D 4-pregnene which is then reacted with a hydrohalic acid. The above processes may be modified in that the 3-ethylenedioxy-11,20-diketo-16,17-oxido - 21 - acyloxy - D 5 - pregnene is prepared by a process claimed in Specification 795,454. The treatment with hydrogen halide is preferably carried out in solution in acetic or propionic acid at room temperature.  The group R is preferably an alkanoyloxy group containing from 2 to 10 carbon atoms.  Cortisone esters are prepared by reducing compounds of the above general formula, e.g. by means of mild chemical and catalytic reducing methods, e.g. by using nickel in a solvent such as boiling ethanol.  In the examples 16-bromo-cortisone acetate and dl-cortisone acetate are prepared.
Patent GB-201035-A (GB)
Title: Improvements in attachment devices for the handles of brooms and the like
IPC: B25G3/24
Filed: 1922-07-26
Abstract: 201,035. Humphries, J. July 26, 1922. Handles with clamping-devices for brushes and the like.-An attachment of the kind comprising a pair of hooked clamping-members a, b having socket parts h for the handle and a bolt k by which it is clamped on the brush &c. head and handle, has each member formed with a strengthening rib l extending o v e r the curved part a, b and along a portion of the socket part h. The members a, b are formed with hook-like ends c which may be recessed at d to avoid interference with the bristles of the brush.
Patent GB-808369-A (GB)
Title: Injection-moulding machines
Inventor: HENDRY JAMES WATSON
IPC: B29C45/54
Filed: 1956-07-02
Abstract: 808,369. Injection-moulding machines. TUBE TURNS PLASTICS Inc. July 2, 1956, No. 20401/56. Class 87(2). In an injection-moulding machine which injects material upwardly, downwardly, horizontally, or at an angle to the horizontal, a ram 10, reciprocating in a ram chamber 2 with a discharge opening at one end, contains a reservoir 11 to which plasticized material is supplied from a pre-plasticizing unit 3 through a slot 12 in the side of the ram. There is relative movement between the ram 10 and a plunger 28 in the reservoir 11, so that during part of the moulding cycle material is discharged from the reservoir into the moulding chamber, past a non-return valve 6 in a passage 17 in the working face of the ram. During the downstroke of the ram the non- return valve 6 closes, and the ram forces material through the nozzle 39 into the mould. The plunger 28 is either stationary or reciprocates with a different stroke from the ram. The pre-plasticizing unit 3 comprises a screw 5 feeding and working material from a hopper 4. Colouring material may be fed under pressure through a pipe 51 into unit 3, the degree of mixing depending on the distance of the pipe 51 from the ram chamber. Specifications 684,582, 710,576, 711,875, 730,750 and 769,104 are referred to.
Patent GB-893193-A (GB)
Title: Improvements in or relating to telephone subscriber's line equipments
Inventor: BARRY JOHN NORMAN
IPC: H04Q11/04
Filed: 1959-06-15
Abstract: 893,193. Automatic-exchange systems; automatic volume-control. GENERAL ELECTRIC CO. Ltd. June 15, 1960 [June 15, 1959], No. 20403/59. Class 40 (4). In a subscriber's line circuit at an exchange in which both speech and calling signals are transmitted as amplitude modulation of pulse trains, the pulse trains are applied between the base and emitter electrodes of a transistor and the demodulated output signals of the transistor are applied via a low pass filter to the subscriber's line, there being automatic means for varying the gain of the transistor in dependence upon the direct current flowing in the subscriber's line. When a subscriber's, e.g. 10, hand-set is on its cradle, a high impedance is presented to his line circuit, rectifier 11 is non- conductive and consequently the base electrode of transistor 35 is slightly negative with respect to earth. Thus transistor 35 is fully conducting and effectively short-circuits resistor 32 in the emitter circuit of demodulating transistor 29. When subscriber 10 in a time division multiplex system is being called, gating pulses are applied to primary winding 27 in his line circuit so as to open a gate (rectifiers 24, 25) between his circuit and the return highway 22 at the appropriate repetition rate of the pulse trains (10 kc/s.). Since transistor 29 is normally cut-off, the positive going calling pulses charge capacitor 31. At the end of the pulse, the charge on capacitor 31 flows into inductor 30 until the base electrode falls to a potential slightly lower than earth, when transistor 29 conducts, resistor 34 effectively damping any oscillation that might arise because of any residual energy stored in the circuit 30, 31. A demodulated signal is thus applied via lowpass filter 33 and hybrid transformer 1 to subscriber 10's electro-acoustic sounder. When he replies (or initiates a call), a low impedance is presented to the line circuit, rectifier 11 conducts and the base potential of transistor 35 is increased to a positive value so that transistor 35 is cut-off. The feed-back resistor 32 is now effective and thus reduces the gain of transistor 29. Speech modulated pulses on highway 22 are now demodulated in the same way that calling signals were but the output power is reduced to about four milliwatts compared with about fifteen milliwatts for the calling signal. Specifications 750,139 and 855,376 are referred to.
Patent GB-148515-A (GB)
Title: Ball bearings for rudders of aeroplanes
IPC: B64C9/02
Filed: 1920-07-10
Abstract: 148,515. Ago Flugzeugwerke Ges. Jan. 8, 1915, [Convention date]. Ball-bearing hinges and pivots.-In order that the steering or balancing planes of an aeroplane may be easily adjustable relatively to the carrying or stabilizing planes to which they are attached, a ball bearing is inserted in the joint. The tubular member b carrying the rudder plane has an aperture q into which protrude brackets e welded to a metal strip c covering the cross-beam a which is profiled to fit the tube b. The brackets e carry an axle f, an inner race g and washers h. An outer race i is encased by a ring k which is split at l and provided with lugs m held by a screw n. A plate o having an aperture p is welded to the tube b and to the ring k, to maintain the axle coincident with the axis of the member b. A forked out-rigger may be used in place of the members e, c.
Patent GB-767323-A (GB)
Title: Engine or other poppet valves
Inventor: ELLIOTT WALTER JOSEPH
IPC: F01L3/10
Filed: 1954-07-14
Abstract: 767,323. Valve accessories. VALVES, Ltd. June 28, 1955 [July 14, 1954], No. 20534/54. Class 135. The stem 6 of an engine or like poppet valve carries a sealing ring. 12 of synthetic rubber &c. to prevent the passage of lubricating oil through a split cotter 9 which is externally tapered for the retention of a spring abutment 10. The sealing ring is retained in position by a pair of integral tongues 13 which project between the longitudinal edges of the parts of the cotter. In a modification the cotter is of the kind having a narrow, internal, annular projection to engage with a narrow groove in the valve stem.
Patent GB-252938-A (GB)
Title: Improvements in the manufacture of pure sulphur
IPC: C01B17/02
Filed: 1925-08-17
Abstract: 252,938. Riley & Sons, Ltd., J., and Bentley, W. H. Aug. 17, 1925. Sulphur.-Pure sulphur is obtained from crude sulphur by dissolving the latter in the mother liquor from a previous operation to form a solution of polysulphide, for example of sodium, calcium, or other alkali or alkaline earth metal, which is then treated with hydrogen sulphide under such conditions of temperature and pressure that elemental sulphur is precipitated. A jacketed pan 1 is charged with water, sodium sulphide, and crude sulphur in quantities necessary to produce, for example, sodium pentasulphide, and the mixture is agitated and heated by passing steam into the jacket 3 until the sulphur goes into solution. The contents of the pan 1 ,are then cooled to about- 40 C. and run through a filter bed 7 into a vessel 6, a fresh charge being placed in the pan 1. The contents of the vessel 6 are run into a jacketed pan 12 and cooled to about 10 C. by agitation and by circulating cold water through the jacket 17. Sulphuretted hydrogen is drawn from a gasholder and forced into the pan 12 by means of a pump 20. While precipitation of the sulphur is taking place in the pan 12, the second charge of polysulphide is run from the pan 1 to the vessel 6, the next charge of crude sulphur is introduced through the charge hole 2 and the lid bolted on. The pan 1 is put into communication with a filter press 23 and the pair are filled with sulphuretted hydrogen by first pumping out the air by means of a pump 26, and then opening a tap 29 on a pipe 30 leading to the gas-holder. When the pressure in the pan 12 is sufficiently high, communication with the filter press 23 is established by opening a tap 31 and the charge is blown out of the pan 12 and through the filter press 23, the filtered liquor and excess gas passing into the pan 1, where the excess gas disengages itself and passes back to the gas-holder. The pump 20 is then stopped, the taps 31, 18, 19 are closed, and a tap 34 is opened to allow the gas under pressure to return to the gasholder. The second charge is then run from the vessel 6 to the pan 12. The purified sulphur in the filter press is washed with clean water, the first washings being passed into the pan 1, and the final washings passing to the drains through a pipe 37. The sulphur is then dried by blowing a stream of air through it, removed from the filter press, and the drying completed. The mother liquor and washings in the pan 1 are agitated with the crude sulphur already in the pan and the pan is heated by the steam jacket. Sulphuretted hydrogen is evolved, passing into the gas-holder, and the sulphur goes into solution forming a fresh batch of sodium polysulphide. The cycle of operations is then repeated. Other soluble sulphides such as potassium or calcium sulphide may be substituted for sodium sulphide. Instead of causing the reaction to take place alternately in hot and cold solutions, they may take place alternately under pressure and vacuum.
Patent GB-249007-A (GB)
Title: Improvements relating to building and flooring blocks
IPC: E04C2/06
Filed: 1925-08-17
Abstract: 249,007. Varley, R. T. Aug. 17, 1925. Compound blocks; flooring blocks.-A building or flooring block comprises a number of tubular bodies embedded in a composition and strengthened by metal reinforcement laced or threaded round the tubes at different levels. Fig. 2 shows a plan of a wall block in which tubes A of earthenware or other suitable material, which may be circular, polygonal, or oval in cross section, are embedded in coke breeze, plaster of Paris, sawdust, or any other suitable material or mixture of materials. Metal rods c are looped round the tubes to form reinforcements, as shown, at as many different levels as is desirable for the particular use to which the blocks are to be put. Lateral reinforcements D may also be used. When in position, the tubes are in alignment, thus forming channels throughout the height of the wall and facilitating the employment of long reinforcing rods passing from the top to the bottom of the building.
Patent GB-389355-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: H05G1/58
Filed: 1932-07-21
Abstract: 389,355. Transformers. MœLLER AKT.-GES., C. H. F., 24, R÷ntgenstrasse, Hamburg, Germany. July 21, 1932, No. 20612. Convention date, July 22, 1931. [Class 38 (ii).] In R÷ntgen-ray installations, the highvoltage transformer 4 and heating-current transformer 5 are supplied from mains 14 through a tapped regulating transformer 6. For fluoroscopy, a control handle is turned in one direction from the zero position and contacts 8 on a switch drum 7 determine which tapping on the coil 6 is connected to the transformer 4. At the same time, contacts 9a close the circuit of a hand-switch 12 controlling the operating circuit of the tube. For radiography, the control handle is turned in the opposite direction. Contacts 9 then determine the tapping used on the coil 6 and contacts 9a short resistances 10 in the heating circuit, the switch 12 being inoperative and a time-switch 11 controlling the exposure. A resilient pawl snapping into position enables the switch positions to be felt by hand without looking at the switch scale. A drum 13 controlling tappings on the coil 6 allows preliminary adjustment of the mains voltage to a standard value and is locked when the main control handle is operated. During rotation of the drum 13, a resistance is inserted into circuit before the transformer connections are made and broken.
Patent GB-636353-A (GB)
Title: Improvements in or relating to the preparation of 2-halo-2-formylethanes
Filed: 1947-07-30
Abstract: 2-Halo-2-formylethanes having the general formula <FORM:0636353/IV (b)/1> in which Z is a quaternary ammonium radical and Hal is a halogen radical are obtained by mixing together 2 : 3-dihalopropionaldehyde and a tertiary amine.  As tertiary amine there may be used pyridine, quinoline or isoquinoline.  The reaction may be effected at a temperature of - 40 DEG  to 15 DEG  C., preferably in the presence of an anhydrous solvent.  Detailed examples are given.  The Specification as open to inspection under Sect. 91 comprises also the use of a secondary amine as the second reactant in which case Z is a radical of a tertiary amine.  This subject-matter does not appear in the Specification as accepted.
Patent GB-497690-A (GB)
Title: Screw manufacture
IPC: B21K1/46
Filed: 1937-07-26
Abstract: 497,690. Forging dies and punches. PHILLIPS SCREW CO. July 26, 1937, No. 20659. Convention date, Aug. 5, 1936. [Class 83 (iv)] In a machine for making screw blanks particularly of the type shown in U.S.A. Specifications 308,246 and 2,046,839 means is provided for mounting the punch, which makes the recess in the head, so that it yields to strains imposed by slight inaccuracies in the work. As shown, a headed blank 14, maintained in position by gripping members 16, 17 and having a head h which has been formed by a die 23, is acted on by a die 21 for forming a screwdriver recess. The die is mounted in an adaptor 27 with a clearance amounting to several thousandths of an inch, a pin 30 tightly fitting in the adaptor but engaging loosely a semicircular groove 31 in the die. Any lateral thrust on the projection 25, of the die due to slight irregularity in the work is lessened by slight movement of the die.
Patent GB-336241-A (GB)
Title: Improvements relating to combined jigs and gauges
IPC: B23Q16/00
Filed: 1929-07-05
Abstract: 336,241. Kings Patent Agency, Ltd., (Gordon, J.). July 5, 1929. Drilling. - Work - positioning means for drilling- machines &c. comprise blocks adjustable along a scale and work-engaging stops movable transversely to the adjustment along inclined planes on the blocks so as to take up operative or inoperative positions. The blocks 1, Figs. 2 and 6, are adjustably clamped by screws 7 on a carrier rod 2 supported by brackets 5 on a channel-shaped base 3 in which the lower ends of the blocks slide. A scale may be provided on the front surface 4 of the base 3 or the rod 2 may be non-circular and provided with a scale as at Fig. 14. The work-engaging stops may consist of rollers 9 located in slots 11 in the blocks 1 and movable over inverted V-shaped floors 10 so as to project into the path of the work A or to be clear thereof. Central pins 12 on the rollers engage apertures 13 in the sides of the slots 11 to restrict the movements of the rollers and screwed pins 15, accessible from the sides of the blocks 1 or through holes 18 in the opposing sides, may be adjusted to confine the rollers to one side or the other of the blocks. A V-slot may also be provided on the pins 15 to locate the rollers in a central position. The rollers 9 may be moved into and out of position by hand or by cams 23, 24, on a shaft 25 operated through linkage from a lever or pedal. The stops may consist of nuts 9<1>, Fig. 2, adjustable along screwed sleeves 19, which are mounted in the blocks 1 in the same manner as the rollers 9. In another modification the floor of the slots 11 is flat and the rollers are guided by their pins 12 in the apertures 13 which are of inverted V-shape with a notch at the apex to locate the rollers in their central position. In a further modification the floor 10, Fig. 14, of the recesses 11 slopes in one direction only and the rollers 9 are maintained in the inoperative positions by projections 33 in the apertures 13 or transverse pins engaging the central pins 12. Alternatively, the work-engaging stops may consist of plungers 43, Fig. 20, slidable in inclined recesses 44 in the blocks 1 and prevented from falling out by projections 46 theron engaging pins in the sides of the recesses. The plungers are preferably square in section and the recesses circular to reduce friction, and the plungers are maintained in the inoperative positions by the back of the work A. Dust covers 48, Fig. 20 or 30, Fig. 6, are provided and more than one carrier rod may be used. In mortising the length or width of a mortise is determined by brackets 36, Fig. 4, on the work-table 37 and adjustable collars 39, 40 on a rod 35 attached to the machine frame 38, and for cutting mortises of different size on the same work-piece A, one or more pivoted catches 42 are provided on a second rod 34. Alternatively, the rods 34, 35 may be attached to the table 37 and the brackets 36 to the machine frame.
Patent GB-1245995-A (GB)
Title: Liquid level sensing means and installations provided with such means
Inventor: PEARSON ROBERT COLIN
IPC: F15C1/00
Filed: 1968-11-26
Abstract: 1,245,995. Fluid-pressure servomotor systems. R. C. PEARSON. Oct. 20, 1969 [Nov.26, 1968; Jan. 15, 1969; April 23, 1969], Nos. 55938/68, 2347/69 and 20683/69. Heading G3P. The supply of liquid to a tank 2 in the Fig. to provisional Specification 55938/68 may be shut-off when the liquid enters the lower end of a U-tube 3 supplied with pulses of air. The pulses are generated by a fluidic NOR gate 5 supplied with compressed air at port 19 and provided with a delay circuit comprising a restrictor 8 and a reservoir 9 to deflect the output periodically into a line 12. The rise in pressure when liquid enters the U-tube is applied to the control port 12 of a flip-flop 14 to divert the compressed air-flow from a port 18 into a line 21 leading to the liquid filling control. Radial holes may be provided at the end of the U- tube. In the Fig. to provisional Specification 2347/69, a pair of similar pulse generating circuits reciprocate a pilot valve 13 which in turn causes reciprocation of a main valve 14 supplying U-tubes 9, 10 in the compartments of a road or rail fuel tanker through non-return valves 40. When a rise in pressure occurs in a U-tube, a diaphragmactuated valve 44 connects a line 53 supplying compressed air to the left hand side of a ram 54 to atmosphere so that the ram is operated by a spring 51 to energize a solenoid valve 58 which connects a filling pipe 5 to atmosphere and returns the liquid supply from a line 59 to a return line 61. The apparatus is supplied through a pressure regulator and lubrication unit 24 which may be filled with glycol to prevent freezing and is fitted with a reset valve 12 and a stop/start valve 20. In a modification, diaphragm-actuated ball valves are used to connect the ram to atmosphere and the pressure in the compartment to be filled is applied to both sides of a diaphragm to prevent any rise in air-pressure in the compartment from operating the filling control. In a further modification, the diaphragm-actuated valve is connected to the U- tube through a restrictor to provide a delay in automatic resetting. The restrictor may be by-passed by a non-return valve so that response time remains unaffected. The U-tube and diaphragmactuated valve may be mounted on a plate which loosely surrounds the filling pipe and rests on the man-hole flange of the compartment and a disc or plate of flat or shaped form may be used to prevent splashing or surging near the end of the tube.
Patent GB-1256206-A (GB)
Title: Process for preparing nitrogen containing organic compounds
IPC: C07F5/02
Filed: 1970-04-29
Abstract: 1,256,206. Nitrogen compounds. SHIONOGI & CO. Ltd. 29 April, 1970 [15 May, 1969], No. 20688/70. Heading C2C. Dialkylaminoalkoxycarbonium fluoroborates of Formula (I) wherein R 1,  R 2  and R 3  is each a C 1-5  alkyl group, are made by reacting a dialkylformamide and an alkyl chlorocarbonate with an ammonium or alkali metal fluoroborate. Dialkylformamidedialkylacetals for Formula (II) wherein R 1,  R 2 , R 3  and R1 3  is each a C 1-5  alkyl group, are made by reacting compounds of Formula (I) (or by reacting the reaction mixture from the above process) with an alkali metal alcoholate.
Patent GB-358903-A (GB)
Title: Improved manufacture of phenol or its homologues
IPC: C07C37/02
Filed: 1930-07-08
Abstract: Chlorbenzene or a homologue thereof is catalytically converted to phenol or its homologues by treatment in the vapour phase with steam at a raised temperature in presence of a compound, other than aluminium oxide or hydroxide or material containing or yielding these, of an element belonging to group 1, 2, 3, or 4 of the periodic system and whose oxide has a basic character, or of a material which contains such a compound, the compound or material being free from impurities, particularly iron.  The addition of copper to the catalyst is advantageous as in the parent process, further additions of nickel, cobalt, silver, gold, metals of the platinum group and compounds of any of these metals inprove the action both of the catalysts specified above and of those of the parent Specification. In examples (1) chlorbenzene and steam are led at 450 DEG  over hydrated stannic oxide or hydrated titanium dioxide; (2) p-chlortoluene and steam are passed at 420 DEG  C. through a tube charged with zinc oxide; (3) chlorbenzene and steam are led at 350 DEG  over iron-free calcium carbonate containing 2 per cent of copper; the reaction may be carried out at 300 DEG  C. by using as catalyst calcined sodium carbonate containing 2 per cent of nickel; (4) chlorbenzene and steam are led at 480 DEG  over aluminium phosphate; aluminium chloride may be used instead at a temperature of 420 DEG .
Patent GB-421990-A (GB)
Title: Improvements in and relating to electric inverter systems
IPC: H02M7/51
Filed: 1933-07-22
Abstract: 421,990. Converting ; mercury-vapour apparatus. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin) July 22, 1933, No. 20708. Convention date, July 22, 1932. [Class 38 (ii)] [See also Group XL] In an inverter employing a grid-controlled vapour-discharge device, an auxiliary anode is provided which is fed with D.C. for the purpose of maintaining the cathodic spot. The auxiliary anode 3, which normally dips into the mercury cathode 4, is connected to the positive D.C. lead through a resistance 1 and operating winding 2. When the D.C. circuit is energized current flows through the winding 2 and the auxiliary anode is lifted out of the mercury 4 and an arc strikes. The current flow is sufficient to maintain the cathodic spot and for the electromagnet to hold the auxiliary anode suspended. Specification 5448 /13, [Class 39 (i)], is referred to.